Rack options, Install the ride thru option (urto) kit, N o t e – ETC Unison ERn Rack-mount Control Enclosure User Manual

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Unison

ERn Rack Mount Enclosure Installation Manual

Rack Options

Unison ERn rack mount unit options include the ride through option (URTO) kit and the

redundant rack power supply module (ERn-RPS).

Additionally you may use a repeater module in the ERn4 enclosure top module slot instead

of a secondary Paradigm station power module.

Install the Ride Thru Option (URTO) Kit

The ride thru option (URTO) kit provides power for the Paradigm architectural control

processor for a minimum of 12 seconds during brief power outages or power drop outs. The

ride through option board fully charges and is ready for operation within ten minutes of the

ERn being powered.

Step 1:

Remove any modules from the ERn enclosure for ride thru option board

installation access.

•

For an ERn2, remove only the bottom option module from the enclosure.

•

For an ERn4 with two Paradigm ACPs, remove the bottom option module

and the rack power supply from the enclosure.

W A R N I N G :

Risk of Electric Shock! The Unison ride thru option board retains an

electrical charge even when power to the ERn enclosure is off.

N o t e :

One Unison ride thru option board powers only one Paradigm ACP, therefore an

ERn4 with two Paradigm ACPs installed requires two ride thru option boards.

N o t e :

For 230 VAC CE enclosures, you must remove the module retention bar from the

left front side of the enclosure before removing any modules. Keep this retention

bar and its hardware in a secure place as it will be reinstalled in the final installation

procedure.

2008